Outsole roughing machines



Nov. 6, 1956 R. F. LANE ET AL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. :5, 1954 7 Sheets-Sheet 1 I n ven'tors Robert F L ane Fred L. Moo/26y By their Attorney Nov. 6, 1956 R. F. LANE ET AL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. 5. 1954 7 Sheets-Sheet 2 [n ventons' Robert F Lane Fred L Mooney By their Attorney Nov. 6, 1956 R. F. LANE ET AL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. 5, 1954 7 Sheets-Sheet 5 Inventors Robert F Lane F'reci L. Mooney By theirtflttorney Nov. 6, 1956 R. F. LANE ET AL 2,769,323

OUTSOLE ROUGHING MACHINES Filed Dec. 3., 1954 7 Sheets-Sheet 4 [nv en tors 30 Poert Fl ane I Fred L Mooney 195/ their Attpr/Ifl/ Nov. 6, 1956 R. F. LANE ETAL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. 3, 1954 '7 Sheets-Sheet 5 In UG'NZOPS' Robert F Lane *Fred 700ney' By zheirAttorncy NOV. 6, 1956 LANE ET AL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. 5, 1954 7 Sheets-Sheet 6 Inventors Robe/'6 Flane Fred L. Mooney By thez'ng lttarney Nov. 6, 1956 LANE ET AL 2,769,328

OUTSOLE ROUGHING MACHINES Filed Dec. 3, 1954 7 Sheets-Sheet '7 Inventors RobertFLane Fred L. Moe/26y By their Attorney United States Patent OUTSOLE ROUGHING MACHINES Robert F. Lane, Beverly, and Fred L. Mooney, Lynn,

Mass., assignors to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application December 3, 1954, Serial No. 472,934

16 Claims. (Cl. 696.5)

The present invention relates to machines for roughing unattached outsoles preparatory to attaching said outsoles to shoes by the use of adhesive and is illustrated as embodied in an improved machine of the type disclosed in United States Letters Patent 2,590,136, granted March 25, 1952, on an application filed in the name of Ernest W. Stacey.

The present invention consists in the novel features hereinafter described, reference being had to the accompanying drawings which illustrate one embodiment of the invention selected for purposes of illustration, the invention being fully disclosed in the following description and claims In the drawings,

Fig. 1 is a perspective view showing the illustrative machine, portions of which have been broken away, in the process of operating upon the flesh side of a leather outsole to form on said outsole a roughened adhesive receiving band which is spaced from the edge of the outsole by a smooth band;

Fig. 2 shows a portion of the machine viewed on the line IIII ofFig. 4; 7

Figs. 3 and 4 are views, partly broken away, on the lines III-III and IV-IV respectively of Fig. 2;

Fig. 5 is a view showing in vertical section a roughing cutter or tool and driven inner and outer rotary sleeves and an edge gage which cooperate with other mechanism to feed and to guide the outsole past the cutter to condition the outsole to its form shown in Fig. 17;

Fig. 6 is a view similar to Fig. 5 but showing a modified cutter and edge gage for use in the roughing of the outsole to its form shown in Fig. 17a;

Figs. 7 and 8 are end views of two types of cutters used in the machine as viewed along the lines VIIVII and VIII-VIII of Figs. 5 and 6 respectively;

Fig. 9 is a side view of the cutter illustrated in Fig. 7;

Figs. 10 and 11 are perspective views of blades or inserts forming parts .of the cutters illustrated in Figs. 7 and 8 respectively;

Fig. 12 is a perspective view of one of a plurality of presser members or feet of the cutters shown in Figs. 7 and 8;

Fig. 13 shows on an enlarged scale a portion of the machine illustrated in Fig. 5 in the process of operating upon an outsole to condition the outsole to the form illustrated in Figs. and 17;

Fig. 14 shows on an enlarged scale a portion of the machine illustrated in Fig. 6 in the process of operating upon an outsole to condition said outsole to the form illustrated in Figs. 16 and 17a;

Figs. 15 and 16 are perspective sections on the lines XV-XV and XVIXVI respectively of Figs. 17 and 17a;

Fig. 17 shows in perspective an outsole which has been operated upon by the use of the illustrative machine to form on the flesh or inner side of the outsole a roughened relatively wide band of uniform width and a relatively narrow smooth band which is formed between the roughened band and an edge of the outsole;

as upon'outsoles of various other compositions.

2,769,328 Patented Nov. 6, 1956 Fig. 17a is a view similar to Fig. 17 illustrating a shank reduced outsole the flesh or inner side of which has been roughened by the machine modified as illustrated in Fig. 6 toform a wide ronughened band which extends along and to the edge of the outsole;

Fig. 18 is a diagrammaticview showing in dash lines a head of the roughing cutter and a substantially frustoconical surface in which end tips of apices of roughing teeth and leading edges of flat faces of the blades of the cutter travel and also showing the relation of said surface to an outsole supported upon the inner and outer sleeves during the outsole roughing operation; and

Fig. 19 is a diagrammatic view showing in plan on a somewhat reduced scale the roughing cutter and the substantially frusto-conical surface'illustrated in Fig. 18 together with associated edge gages of the machine and also showing the outsole presented, during two different stages of the outsole roughing operation, to the cutter and the edge gage.

The illustrativemachine is described with reference to roughing the margin of the flesh or inner side of a leather outsole 30 to form on said side'a roughened adhesive receiving band 32 (Figs. 15, 17, 18 and 19) which is of uniform width .and is spaced from an edge of the outsole by a smooth band 34 of uniform width. The machine slightly modified is also described with reference to roughing the margin, of the'flesh or inner side of a shank reduced. outsole30a (Figs. 14, '16 and 17a) to form on said side a roughened adhesive receiving band 32a which is, of uniform width and extends to the edge of the outsole. Although lthe machine is herein described with referenceito, its operation on leather outsoles, it will be understood that said machine will effectively form roughened bands and smooth bands similar to those described uponleather board and rubber outsoles as well "ice The roughened band 32 or 32a formed upon the outsole 30 or 30a commonly starts at one rear lateral margin'of the outsole and after progressing around the forward end of the outsole terminates at the opposite rear lateral margin of the outsole. The outsole 30 or 30a is manuallyinserted, rear end leading, between a driven composition rubber feed roll 42 (Figs. 2 and 4) and a driven toothed feed wheel 44 which are arranged not only to feed the sole longitudinally but also to exert a cross feeding force upon the sole to keep its edge in contact with a freely rotatable cylindrical edge gage 48 and a driven edge gage. 46 or 46a over driven inner and outer work-supporting sleeves or rings 38, 40 and past a driven rotary cutter or tool 36 or 36a to form the roughened band 32 and the smooth band 34 on the outsole 30 or to form the roughened band 3211 on the outsole 30a.

When the outsole 30, the shank portion of which has not been beveled or shank reduced, is operated upon to form the roughened band 32 and the smooth band 34, the cutter 36 and the edge gage 46 (Figs. 3, 5 and 13) are used and-when the outsole 30a, a shank portion of which has been beveled or shank reduced, is operated upon'to form the roughened band 32a extending to the edge of the outsole, the cutter 36g and the edge gage 46a (Figs. 6 and 14) are used. 1 Heads 50 of the cutters 36 and 36a are identical and blades or inserts 52, 52a of said cutters are quickly and effectively secured 'in their operative positions to the associated heads by means hereinafter described. The edge gages 46, 46a may be quickly and effectively secured,

respectively, by screws 54, 54a to the upper end of the .of driving mechanism which best shown inFig. 3.

Se r to t e r r. portion at th tab e .581anslto rning part of the main frame 56 is an upright bracket 62 (Fig. 1) having secured to it bearing pins 64 upon which are journaled covers 66, 66a which may b swung forward from their open positions shown in Fig, ,1 to their closed positions (Fig. 2) in which they house theoutsole feeding, guiding and roughing instrumentalities of the machine. The covers 66, 66a are locked in :their closed positions by a latch 69 and insure against the operator being injured as the outsole is ,presented to and is removed from the machine. The cover.66.'has secured to wit by screws 71 a guide plate or abutment 73 which, as will be hereinafter explained, aids in holding down the margin of the outsole 30 or 30a during its passage through the machine, t

Rotatably mounted in bearingspressed into a depending flange of the mainframe 56 is a drive sleeve 68 (Figs. 3, and 6) having secured :to its lower .end a sprocket 70 which is operatively connected by a ribbed timing belt 72 to a .drive sprocket 74 secured to an upstanding shaft 576 rotatably mounted in a gear box 78. Power for driving the machine is supplied by a motor (not shown) having a shaft 80 which is operatively connected by a belt 82 .to .a pulley .84mounted upon a horizontal shaft 86 journaled in vthe gear 'boX 78 and operatively connected .by a drive 87 .to'the vertical shaft 76.

The drive sleeve 68 has a bore 88 which is centered about an axis 89 and in which is journaled a shank portion of the outer sleeve 40 which has at its lower end a circular groove 90 for slidingly receiving rolls 92 carried by a rear bifurcated end of a support arm 94 secured .toa bearing pin 96 journaledgin a bearing of the main frame 56. The outer sleeve 40 has a central bore 98 which is concentric with the axis 89 and in which fits slid- .ingly a shank portion of the inner sleeve38 the lower end portion of which has secured to it a spool 100 provided with a circular groove 102 adapted to receive rolls 104 carried by a bifurcated rear portion of a support arm 106 secured to a bearing pin 108 journaled in the main frame 56.

Formed on the upper end ofthe drive sleeve 68- is an upstanding flange 110 fitting slidingly in a slot 112 of the outer sleeve 40 and in a channel 114 of the inner sleeve '38, the construction and arrangement being such that rotation of the drive sleeve effects degree for degree rotation of the concentric inner and outerfsleeves and that the inner and outer sleeves may be moved yieldingly independently with relation to the drive sleeve '68 away from the cutter 36 or 36a lengthwise of the axis of rotation 89.

The support arm 94 has formed in it an elongated slot 116 in which engages a cap -nut 1 18 into which is threaded a thumb screw 120 provided with a stud portion attached to a spring 122 having its upper'end'hooked through an eye screwed into the main frame 56. Clockwise movement of the arm 94, as viewed in Fig. 3 ,-upor 1 the main frame 56 is limited by the engagement of alserew 124 threaded into the support'arm with the main frame. The support arm 106 has extending through it'a horizontal slot 126 for receiving a cap nut 128 which has {threaded into it a thumb screw 130. The support-arm 106 is constantly urged clockwise, as viewed in Fig, 3, by a spring 131, clockwise movement'of'the arm being limited by the engagement of a screw 132, which is threaded into the arm, with the main frame 56. The forces urging the support arms 94, 6 clockwis e (Fig. 3) and accordfaces 134, 136 of the sleeves may be referred was circular work-supporting surfaces. In order to facilitate the depression of the outer sleeve 40 to enable the outsole 30 or 30a to be moved under pressure between the cutter 36 or 36a and the sleeves (Figs. 13 and 14), the outer sleeve 40 has formed at the outer margin of its flat upper face 134 a beveled lip 137. To insure that when the outsole 30 or 30a has been inserted between the cutter 36 or 36a and the outer sleeve 40, the inner sleeve 38 shall not project so far above the outer sleeve 40 that th outsole cannot be readily slid over the upper face 136 of the inner sleeve, a lower end of the outer sleeve is arranged a predetermined distance 138 (Fig. 3) from an upper face of the spool secured to the inner sleeve, the construction and arrangement being such that after the outer sleeve has been depressed said distance 138 relatively to the inner sleeve, the inner and outer sleeves are moved downward together.

In order to facilitate the feeding of the outsole 30 .or 30a past the cutter 36 or 36a there is secured to the table 58 by screws 123 (Figs 2 and 3) an arcuate block or rest having a flat upper surface 127 which surrounds and is positioned in front of the beveled lip 137 of the outer sleeve 40 and which has a rounded-off surface 129 (Figs. 1 and 4) which is substantially continuous with a convex face 133 of a yielda-ble support 135 mounted on a multipart carrier 139, hereinafter described.

With the above construction the outsole 30 or 30a may be quickly and elfectively presented to the machine, the outsole sliding over the convex face 133 of the yieldable support 135 and the arcuate block 125 as it passes through a gap or notch 141 (Figs. 3, 5 and 18) formed between the cutter 3,0 or 30a on the one hand and the faces 134, 136 of the sleeves 40, 38 respectively on the other hand. The face 127 of the. arcuate block 125 is elevated sufiiciently above the table 58 to permit the operator readily to grasp the outsole 30 or 30:: to withdraw the same quickly from the machine and is also narrow enough to permit the outsole being operated vupon to tilt laterally to accommodate shank reduced work. The upper surface 127 of the arcuate block 125 may be described as a narrow outsole supporting ledge disposed at right angles to the axis of rotation 89 and having a depending apron dropping away from or disposed at a substantial angle to the ledge.

When the rear end of the flesh side of the outsole 30 or 30a is left unroughened, as illustrated in Figs. 17 and 17a, it is customary to permit the cross feed action of the machine operating against the outsole to force said outsole into and through the notch 141 and past the cutter 36 or 36a since it makes little difference whether or not the rear end of the outsole is undesirably roughened during the time that it is inserted in and removed from the machine, in view of the fact that the rear end of the outsole will be trimmed from said outsole during a subsequent heel seat fitting operation.

Some outsole roughing operations require that there shall be formed on the outsole 3011 a roughened band 32a or that there shall be formed on the outsole 30 a roughened band 32 and a smooth band 34 extending around the entire outsole. In order to insure against damaging these outsoles as they are inserted in and removed from the machine, the inner and outer sleeves 38, 40 are manually lowered by a chain (Fig. 3), which is attached to the support arm 106 and is operatively connected to treadle mechanism (not shown), during the time that the work is presented to and removed from the machine.

When the machine is idle a lower face 142 (Figs. 3, 5 and 6) of the inner sleeve 38 is arranged a distance 144 above the bottom of a well 146 in the outer sleeve 40, said distance being substantially equal to the distance the upper face 136 of the inner sleeve 38 porjects above the upper face 134 of the outer sleeve 40. Accordingly, when the inner sleeve 38 is lowered by depression of the chain 140, it will be depressed relatively to the outer sleeve 40 until it contacts the bottom of the well'146,

the outer sleeve thereafter moving downward with the inner sleeve. Downward movement of the outer sleeve '40 and accordingly depression of both of the sleeves 30, 40 ceases when a shoulder 147 of the outer sleeve engages a shoulder 149 of the drive sleeve 68.

Secured by screws '148 (Figs. 2 and 3) to the table 58 is a bracket 150 provided with a dovetail guideway 152 disposed at right angles to the axis of rotation 89 of the sleeves 38, 40 and having slidingly fitted in it a plate 154 which has recesses for receiving dowels 1'56 carried by a bearing housing 158 and in which is threaded a screw 160 extending through a bore 162 (Fig. 1) of the housing. The housing 158 includes a bearing sleeve 164 (Fig. 3) and ball bearings 168 in rotates a. shaft 170 journaled to rotate about an axis 172 and having secured to its lower end by a screw 174 the cutter 36 or 36a. The plate 154 may be initially secured in different adjusted positions in the guideway 152 by the use of screws 177 which extend through slots 175 in the plate and are threaded into the bracket 150.

The bearing housing 158 is so constructed and arranged that the axis 172 about which the cutter 36 or 36a is rotated lies approximately in a common vertical plane with and intersects the axis 89 of rotation of the sleeves 38, 40 at an angle D (Fig. 3) of about four degrees. The cutter 36 or 36a may be raised or lowered slightly into different operating positions on the shaft 170 in accordance with the desired width of the gap 141. The cutter 36 or 36a may be moved into different adjusted positions at right angles to the axis 89, for purposes which will be hereinafter explained, by moving the plate into different adjusted positions along the guideway 152 of the bracket 150. Although the axis 172 has been described as lying substantially in a common substantially vertical plane with the axis 89 it has been found advantageous to tilt the axis 172 approximately one degree to the right, as viewed from the front of the machine or in the direction from which the work advances, with relation to the axis 89.

Each of the cutting blades 52 has opposite operating portions 178 (Fig. each comprising an inner fiat or smooth face or portion 180, which has straight lateral edges or cutting edge portions 182, and teeth 184 apices 1-86 of which lie in the plane of the face 180. The head 50 has a frusto-conical surface 187 (Figs. 7 and 9) or end face elements of which are inclined at about 4 to a plane 189 disposed at right angles to the axis of rotation 172 of the head. When the blades 52 and presser members or feet 188 associated therewith are positioned in the head 50 a straight line 196 extending along the leading or active lateral edge 182 of the face 180 and along corresponding leading or active end tips 192 of the apices 186 of the teeth 184 of each of the blades extends approximately a constant distance beyond the substantially fursto-conical surface 187 and a less but constant distance beyond a work-engaging or presser face 194 of an associated presser member 188. Each of the blades 52a has operating portions 178a (Fig. 11) comprising teeth 148a, apices 186a of which have end tips 192a. When the blade 52a and the presser members 188 associated therewith are positioned in the head 50, a straight line 190a (Fig. 8) extending along the forward operating or active end tips 192a of the apices 186 of the teeth 184a of each of the blades extends an approvimately constant distance beyond the substantially frusto-conical surface 187 and a less but approximately constant distance beyond the .workengaging face 194 of an associated presser member 188. As the cutter 36 or 36a is rotated about the axis 172 the lines 190, 190a generate a substantially frusto-conical surface V196 (Fig. 18) which is generally similar to the surface 187.

The construction and operation of the cutters 36, 36a .and their component parts will be hereinafter described in detail. By initially adjusting the cutter 36 as an entirety at right angles to the axis 89 about which the sleeves 38, 40 are rotated, the amount that the faces 180 of the blades extend over an upper planar side or face 198 (Figs. 2, 5 and 13) of the edge gage 46 and forward of and beyond a cylindrical face 200 of the gage 46 may be varied thereby varying the width of the smooth band 34 formed along the edge of the outsole 30.

When the cutter 36a is being used the adjustment of the cutter at right angles to the axis 89 is utilized initially to set said cuttter in a position in which the inner ends of the cutting blades 52a move in close relation to a peripheral or cylindrical face 202 (Figs. 6 and 14) of the edge gage 46a which is partially housed in a pocket 204 (Figs. 5 and 6) formed in the cutter head 50. The shaft 170 has secured to its upper end a pulley 206 (Figs. 1 and 3) operatively connected by a belt 208, which passes over a pair of idler pulleys 210 and a pulley 212, to the motor shaft 80.

It is desirable that the inner margins of the roughened bands 32, 32a shall blend with adjacent unroughened portions of the faces of the outsoles 30, 30a. There is a tendency, however, during the roughing operation, for the outsole 30 or 3002 to be bent slightly upward around the outer teeth 184 or 184a (said outer teeth being the teeth furthest away from the axis 172) of the blades 52 or 52a of the cutter with the result that a slight shoulder is sometimes formed along the inner margins of the bands. With the foregoing in view, the cover 66 (Figs. 1 and 2) carries the arcuate guide plate 73 which is provided with slots 211 (Fig. 6) for receiving the screws 71 which are threaded into said cover, the construction 'and arrangement being such that the guide plate 73 may be initially raised or lowered into its desired position to insure against the formation of undesirable shoulders along the inner margins of the bands 32 or 32a. Guide plates 73 of different sizes and shapes may be interchangeably incorporated in the machine. The arcuate plate 73 may be described as having a face 197 (Figs. 5, 6, 13 and 14) positioned generally in alinement'with a portion of the frusto-conical surface 196 and forming with the upper surface or ledge 127 of the arcuate block a passage through which the outsole passes as it is presented to the cutter 36 or 36a.

Dcpending brackets 213 (Figs. 1, 2 and 4), which are secured by means hereinafter described to the main frame 56, have formed in them bores 214 (Fig. 2) for receiving trunnion pins 216 secured by screws 218 to the multipart carrier 139 upon which are mounted the rubber feed roll 42 and the edge gage 48, as well as the convex support which is adapted for use in the presentation of the outsole 30 or 30a to the work feeding and trimming instrumentalities of the machine. The carrier 139 comprises a depending lug 224 a lower end of which lies in front of a plunger 226 which is slidingly mounted in a bore 228 (Fig. 4) of the main frame 56 and is constantly urged forward by a spring 230 arranged in a recess of the plunger and backed up by a nut 232 threaded into the main frame. Upward or clockwise movement of the carrier 139 is limited by engagement of a stop screw 234, which is threaded into the carrier, with the bottom of the table 58.

Rotatably mounted in the carrier 139 is a shaft 236 to the forward end of which the feed roll 42 is secured. The shaft 236 is operatively connected by a universal coupling 238 to a shaft 240 which is rotatably mounted in the main frame 56 and has secured to it a bevel gear 242 meshing with a bevel gear 244 secured to the upper end of a shaft 246 rotatably mounted in the main frame. Secured to the lower end of the shaft 246 is a sprocket 248 which is driven by the timing belt 72.

The edge gage 48 is freely rotatable upon a bearing pin 250 secured to an arm 252 provided with a slot 254 through which passes a screw 256 threaded into the carrier 139, the construction and arrangement being such thatthe arm can be initially adjusted to the desired position upon the carrier by releasing the screw and, after moving the gage to the desired position, again tightening said screw. In order to insure that the outsole Si) or 30a, as it is being fed through the machine, shall not override the edge gage 48 the arm F2 is provided with a forwardly projecting lip 253 beneath which the outsole, in engagement with the edge gage, slides.

The table 53 has formed in it a recess 26b and secured to the carrier 139 by screws 262 and extending through the recess is the convex support 135 above which the feed roll 42 extends and which assists in the guiding of the outsole 30 or 3% between said roll and the toothed feed wheel 44, said feed wheel cooperating with the sleeves 38, 40 and the edge gage 46 or 46a in moving by cross feed action the guided outsole past the cutter 3 3 or Secured by screws 264 (Fig. l) to the main is a housing 266 in which is journaled an inc lned shaft 268 (Fig. 4) having secured to its lower end a bevel gear 276 meshing with a bevel gear 272 which is secured to the bevel gear 242, the shaft 258 having secured to its upper end a bevel gear 274 meshing with a bevel gear 276 secured to an inclined shaft 27% upon the lower end or" which the feed wheel 44 is secured. The stop screw 234 is initially adjusted to provide a gap 23 of less width than the thickness of the thinnest outsole 3% or Ella to be operated upon, the outsole being manually pushed into the gap. The housing 266, which may be considered part of the main frame 56, has secured to it by screws 2-79 the brackets 213 upon which the carrier 139 is journaled.

As above explained, when the roughened adhesive receiving band 32 or 32a is to extend around the entire margin of the flesh side of the outsole 3% or 33a it is desirable that the feed roll 42 as well as the sleeves 38, 40 shall be depressed prior to introducing the work into the machine. Accordingly, the carrier 139 has attached to it a chain 282 which is depressed in response to movement of the above-mentioned treadle mechanism (not shown). While the operator is removing the roughened outsole from the machine and is introducing an outsole which is to be operated upon in the machine, he holds, by the use of said treadle mechanism, the chains 140 and 282 depressed. After releasing the treadle mechanism preparatory to allowing the roughing operation "to proceed, the sleeves 38 40 on the one hand and the feed'roll 42 on the other hand are moved to their raised operating positions by spring action.

The head of the cutter or tool 36 or SM is provided with channels 236 in which the associated pairs of presser members 138 and blades 52 or 52a are secured by' mechanism hereinafter described. Bottoms or bottom faces 288 of the channels 286, which have a parallel side faces disposed at right angles to said bottom faces, are inclined inward and upward, as viewed in Fig. 9, at an angle A of approximately 4 to the plane 139 which is normal to the axis of rotation 172 of the cutter or tool 36, 36a, said 4 angle being approximately equal to the cone angle of the frusto-conical surface 187 of the head 50. The channels 189 may be described as being skewed lengthwise at an angle A with relation to the plane 189' The frusto-conical surface 187 may be described as having elements which are inclined at a slight angle to said plane.

' The presser members 188 engage substantially the entire bottoms 288 of the associated channels 286, faces 289 (Figs. 9 and 12) of right angles flanges of the presser members positioned in and secured to the head 50 being arranged parallel to the bottoms 288 and being engaged by inactive operating portions 178 or 1780 of the blades 52 or 52a. The entire operating portions 178a of the blades 52a are provided with the teeth 184a the apices 186a of which lie in planes, respectively, which are parallel and are disposed at right angles to sides or side faces 220:: of theblades. Approximately the outer two-thirds of the operating portions 178 of the blades 52 are toothgd,

the remainingor inner one-third of said operating portions consisting of the faces 13% which are arranged in planes in which the apices 186 of associated teeth 184 of the blades lie. The planes in which the apices 186 of the teeth 184 of Opp site operating portions 173 respectively of the blades 52 lie are parallel and are disposed at right angles to sides or side faces 290 of the blades 52. The blades 52, 52a have in their sides 299, 290a frusto-conical holes or recesses 296, 29611 against the lower halves of which are forced frusto-conical ends of screws 2% which are threaded into the head and are properly angled and positioned to force the blades against side faces 3% and'fiange faces 289 of the presser merobers which may be described as L-shaped.

The channels 286, and accordingly the presser members and the blades 52 or 52a secured in the channels, are longitudinally skewed at angles B with relation to associated radial planes which include the axis of rotation 172 and pass through the outer ends of the presser members and the blades, thereby insuring that the leading tips 192 or 192:: of the apices 186 or 18 ,691 of the active teeth 134 or 184a which project beyond workengaging faces 194 of the presser members and extend generally circumferentially of the cutter head 59, shall clear themselves in the work and assist the Presser members in wiping the outsole being roughened inward toward the edge gage 46 or 46:1. By inclining the axis 172 slightly (approximately 1) toward the oncoming work, as above cxplained, the work is forced with additional pressure against the edge gage 46 or 4611 as it is moved past the cutter 36 or 36a. 2 i

When the presser members 183 and the blades 52 have been secured in their operating positions in the cutter head 56, the leading or active lateral edge 182 of the face 184 and the leading or active end tips 192 of the apices 186 of the teeth 18 4 of the active operating portion 178 of each of the blades lie approximately'in the line 19% which is disposed at approximately 4 to the plane 189. In like manner when the presser member 188 and the blades 52a have been secured in their operating positions in the cutter head 50, the leading or active end tips 192a of the apices 136a of the teeth 184ajof the active portions 178a of each of the blades lie approximately in the line a disposed at 4 to the plane 189.

The bottoms ass of the channels zss formed in the head 56 are skewed widthwise at an angle C (Fig. ,9') to the plane 189. As above explained, the bottoms 288 of channels 286 are disposed at right angles to the side faces of the channels and the flange and side faces 289, Still respectively of the presser members 188, secured in the channels, are arranged parallel to the bottoms 288 and the side faces respectively of the channels. Since the parallel planes in which the faces 184i and the apices 1 86 of the teeth 184 of the blades 52 lie are disposed at right angles to the side faces 2% of the blades 52, and since the parallel planes in which the apices 136a of the teeth 134:: of the blades 52a lie are disposed at right angles to the side faces 290a of the blades 52a, it will be apparent that when the blades are clamped in their operative positions in the channels 236 they will be skewed at ang'les'B with relation to associated radial planes and will be skewed lengthwise and widthwise at angles A and C with relation to the roughing plane 189 which is disposed at right angles to the axis ofrotation of the cutter. The angle C selected is equal to the desired angle E of back rake of the active faces 18% and the active apices 186 of the teeth of the cutter 36, said angle C also being equal to the desired angle of back rake of the apices 18611 of the teeth 184:: of the blade 52a o f' the cutter 36a. The channels 286 and the blades 52 may also be defined as being arranged generally in planes obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool.

The lines 1%, 196a may be described as lying the substantially frusto-cor ical surface 196, elements of which are disposed at a slight angle to a plane 304 which lies in a base of said surface and is normal to the axis of rotation '172 of the cutter 36 or 36a. The substantially frusto-conical surface 196 may also be described as facing at an oblique angle away from the axis of rotation 172 of the cutter or tool 36 or 36a which may be further described as an end mill roughing tool. The cutter 36 or 36a may also be described as comprising a plurality of blades 52 which are spaced circumferentially about the axis of rotation 172 of the cutter and each of which has a face 180 and a row or series of teeth 184, a leading edge 182 of said face and leading end tips 192 of apices 186 of said teeth extending below or projecting beyond a work engaging surface 194 of an associated presser member 188 and lying approximately in the frustoconical surface 196 which is generated by the lines 190. The cutter 36a may also be described as comprising a plurality of blades 52a which are spaced circumferentially about the axis of rotation 172 of the cutter and each of which has a row or series of teeth 184a leading end tips 192a of apices 1860: of which extend below or project beyond the work-engaging face 194 of an associated presser member 188 and lie in the substantially frusto-conical surface 196 which is generated by the lines 190a.

One part of the portion of the substantially frustoconical surface 196, in which the active straight cutting edges 182 of the blades 52 lie, may be described as being arranged in close proximity and in opposed relation to the top face 198 of the edge gage 46, and another part of said portion of the substantially frusto-conical surface may be described as projecting beyond the peripheral face 200 of said gage and as forming with a part of the substantially frusto-conical surface in which the end tips 192 of the apices 186 of the teeth 184 of the blades 52 lie and with the work supporting faces 134, 136 of the outer and inner sleeves 40, 38 and the peripheral face 200 of the edge gage 46, the notch 141 through which the margin of the outsole 30 is moved with its edge in engagement with said peripheral face. One of the edges 182 of the fiat portion or face 180 of each of the blades 52 may be described as being arranged in one portion of the substantially frusto-conical surface 196 which is centered about the axis 172 and elements of which are inclined to said axis and the end tips 192 of the apices 186 of the teeth 184 of each of said blades 52 may be said to lie in another portion of said frusto-conical surface.

It will be understood that since the blades 52, 52a are skewed at the angle B with relation to radial planes which extend through the outer ends of the respective blades and include the axis 172,,the locus or surface 196 formed by the lines 190, 190a will not be an exact mathematical frustum of a cone and instead of having straight radial elements will have radial elements which are very vslightly concave. However, in view of the fact that the vertex angle of the frusto-conical surface 196 is only 4 and the angle B is slightly, the loci of the lines 190, 190a is substantially a frustum of a cone. It will be understood, however, that whenever the loci of the lines 190, 190a are referred to as a frusto-conical surface 196, such definition is intended to include any surfaces which are generally similar to a mathematical frusto-conical surface.

The blades 52, 52a are preferably made of tungsten carbide and, as above explained, the bottoms 288 of the channels 286 and the faces 289 of the presser members 188 secured in the channels are disposed at an angle C to the plane 189, said angle C being equal to the back rake angle E of the apices 186, 186a of the active teeth 184, 184a, respectively of the blades 52, 52a in the cutter head 50. By forming the roughing teeth 184a at opposite operating portions 178a of the blades 36a and arranging the apices 192 of the teeth of the blades in parallel .planes disposed at right angles to the sides 290a of the blades and by also arranging the faces 289 of the presser members 188 at the angle C, which is equal to the'de sired rake angle E, with relation to the plane -1 89,- the four sets of end tips 192a of each of the blades 36a may be used successively, thereby increasing the life of said blades without sharpening. The apices 186 of the teeth 184 in each of the four different operating positions of the blades have an angle of back rake which may be described as complemental to theangle at which the general planes of the channels 286 are obliquely inclined to the plane 189. I

In order quickly and effectively to position the blades 52, 52a in the heads 50 of the cutters so that the teeth 184 or 184a of alternate blades shall be staggered lengthwise of the channels 286 by half the gap between the teeth with relation to teeth of adjacent blades, the screws 298 of alternate units of the cutters 36 or 36a are arranged in slightly different positions lengthwise of the channels and cooperate with the frusto-conical holes 296 of the blades 52 or 52a to arrange alternate blades in slightly different operating positions lengthwise of the channels thus further insuring that the teeth of the blades shall clear themselves in the work during the roughing of the work.

As above explained, when the cutter 36 is used the edge gage 46 is so positioned that its upper planar side face 198 is arranged just below the frusto-conical surface 196 or the locus of the lines of the blades 52,'-said locus projecting outwardly beyond the cylindrical peripheral face 200 of the edge gage 46 with the result that the active lateral edges 182 of the blades form the smooth band 34 at the edge of the outsole 30. As above explained, the cutter 36 may be initially adjusted at right angles to the axis of rotation 89 of the sleeves 38, 40 to vary the amount that the active lateral edges 182 of the blades 52 project beyond the periphery of the edge gage 46 during rotation of the cutter and accordingly to vary the width of the smooth band 34 formed on the outsole 30. a

As above explained, in order that the teeth 184, 184a of the roughing cutter or tool 36, 36a shall dip into the outsole 30 or 30a as they rotatingly swing down along the substantially frusto-conical surface 196 and over and from the outside of the outsole, the axis of rotation 172 of the cutter is forwardly tilted approximately 4 from the vertical, said axis being disposed at an acute angle to the face portion of the outsole being roughened. The axis of rotation 89 of the cutter or tool 36 or 36a may be described as arranged or lyingoutside the outsole being roughened and as being tilted toward the outsole at an acute angle to the general plane of the face of the outsole being roughened. It'will be apparent that when the teeth 184, 184a of the blade 52 or 52a of the roughing cutter or tool 36 or 36a are in their lowermost positions, the line 190 or 190a is arranged approximately opposite and is substantially parallel to the portions of the flesh or upper face of the outsole in the notch 141, said teeth, because of their entry into the work along a substantially frusto-conical path as above described, performing their roughing operation Without any substantial amount of bridging of the outsole lengthwise of its margin. The peripheral faces 200, 202 of the edge gages 46, 46a and the spaced opposing portions of the frustoconical surface 196 and faces 136, 134 of the sleeves 38, 40 form the outsole receiving notch or gap 141 which may be described as curving generally about the axis of rotation of said sleeves and may be defined as arcuate. The peripheral faces 200, 202 of the edge gages 46, 46a may be referred to as arcuate outsole engaging faces which are coaxial with the axis 89 and which are positioned between an axis of rotation of the cutter or tool and a portion of the sleeves or supports 38, 40'engaged by the outsole being operated upon. I

Having thus describedour invention what we claim as 1 1 new and desire to secure by Letters Patent of the United States. is:

1. In an outsole roughing machine, a pair of supports whichhave circular work supporting faces and are rotatable about a common axis, a cutter which comprises a plurality of cutting blades each having an inner straight cutting edge portion and an outer toothed portion, said portions being rotatable about a common axis and during their rotation lying in different portions of a substantially frusto-conical surface, an edge gage which 'has a top face and a cylindrical peripheral face and which is rotatable with said supports about the first-named axis, means for yieldingly forcing the work supports toward the cutter and lengthwise of their common axis of rotation, a part of the portion of the substantially frusto-conical surface in which the straight cutting edge portions of the blades lie being arranged in close proximity and in opposed relation to said, top face of the gage and another part of said substantially frusto-conical surface in which the straight cutting edge portions of the blades lie projecting beyond Saidperipheral face of the gage and forming with the portion of the substantially frusto-conical surface in which the outer toothed portions of the blades lie and with the work supporting faces of the sleeves and the peripheral face of the edge gage, a notch through which the margin of an outsole may be moved with an edge thereof in engagement with said peripheral face, and means for moving and guiding through said notch the outsole lengthwise of its edge with said edge in engagement with the face of the edge gage whereby to form on the margin of a face of the outsole a roughened band which is of uniform width and is spaced from the edge of the outsole by a smooth band, said cutter being bodily movable into different operating positions at right angles to the axis of rotation of the supports to vary the position of the substantially frusto-conical surface with relation to the edge gage and the work supporting faces of the supports whereby to vary the position of the roughened band and the width of the smooth band on the outsole.

2. In a roughing machine, a plurality of concentric work-supporting rings which rotate in one direction about an axis and are independently yieldable lengthwise of said axis, a roughing tool which rotates in a direction opposite tothe direction of rotation of the rings and which comprises a plurality of teeth spaced from and arranged in opposed relation to said rings, means for guiding a work piece over the'rings and past the tool to prepare a surface of said work piece for the reception of adhesive, and means for initially moving the roughing tool as an entirety at right angles to said axis into different operative positions with relation to said rings.

3. In a machine for roughing outsoles, inner and outer arcuate supports which are adapted to be engaged by an outsole and which are curved about an axis and are independently yieldable generally lengthwise of said'axis, outsole feeding and guiding means comprising'an edge gage arranged adjacent to said'supports and having an arcuate outsole engaging face which is centered about said axis, an arcuate rest which surrounds an outer portion of said outer arcuate support and has a narrow outsole supporting ledge which is disposed substantially at right angles to said axis and is arranged generally in alinernent with said supports, and a roughing tool rotatable about an axis and having teeth arranged generally in a frusto-conical surface which faces away from said axis at an oblique angle thereto and which is arranged in opposed relation to said supports and is positioned adjacent to said face 'of the edge gage.

' 4. In a machine for roughing outsoles, inner and outer arcuate outsole supporting members which are curved about an axis and are independently yieldable generally lengthwise of said axis, outsole feeding and guiding means comprising an edg'e 'gage' having'an arcuate face which is curved about said axis and is'adapted to be engaged by an edgebf'the'outsoIe,'anda roughing tool rotatableabout an axis and having a plurality of circumferentially spaced cutting blades each of which has an inner straight cutting edge portion and an outer toothed portion arranged generally in a frusto-conical surface which faces away from said axis at an oblique angle thereto and which is arranged in opposed relation to said support and is positioned adjacent to said face of the edge gage, said roughing tool being initially movable into different operating positions at right angles to said first-named axis with relation to said arcuate outsole supporting members and to said edge gage.

5. In a machine for roughing outsoles, inner and outer arcuate outsole supporting members which are curved about an axis and are independently yieldable generally lengthwise of said axis, outsole feeding and guiding means comprising an edge gage having an arcuate face which is curved about said axis and is adapted to be engaged by an edge of the. outsole, an arcuate rest which surrounds an outer portion of said outer arcuate member and has a narrow outsole supporting ledge disposed substantially at right angles to said axis, a roughing tool rotatable about an axis and having roughing blades arranged generally in a frusto-conical surface which faces away from the axis of rotation of the tool at an oblique angle thereto and which is arranged opposite said support and is positioned adjacent to said face of the edge gage, and an arcuate abutment which surrounds a portion of the tool and has a face which is in approximate alinement with a portion of said frusto-conical surface and forms with said ledge of the arcuate rest a passage through which the outsole' passes as it is presented to the tool.

6. In an outsole roughing machine, an end mill roughing tool comprising a head which is rotatable about an axis and has an end face, channels which are formed in the end face of said head and are spaced circumferentially about said axis and are arranged generally in planes obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool, a plurality of presser members and blades, means for securing said presser members and said blades in predetermined positions side against side in the channels, said presser members having work-engaging faces which when said presser members are secured in said channels project beyond the end face of said head and are arranged approximately in a frustoconical surface centered about the axis of rotation of the tool and each of the blades having an inner flat portion provided with opposite active and inactive edges and an outer portion comprising teeth having apices provided with active and inactive end tips, said active edges of the inner flat portion and said active end tips of the apices of the teeth of said outer portion of each of the blades secured in said channels projecting beyond the end face of said head and beyond'the work-engaging face of an associated presser member and lying approximately in frusto-conical surface centered about the axis of rotation of the tool, a yieldable support, and means for feeding 'and'guiding the outsole over the support and past the roughing tool.

7. In an outsole roughing machine, an end mill roughing tool which is rotatable in one direction about an axis and comprises a head provided with an end face and having formed in it circumferentially spaced channels each having'a fiat bottom face and parallel side-faces which are disposed at right angles to said bottom face and each of which is obliquely inclined to a plane disposed at right anglesto the axis of rotation of the tool, L-shaped presser members each of which has right angularly disposed faces and a presser face and is adapted to engage the bottom and one of the side faces of an associated channel in which it registers and which when registering in said associated channel has its presser face projecting beyond the end face of said head, roughing blades which have opposite sides and have opposite active and inactive operating portions respectively provided with teeth having apices which lie in parallel planes dis posed at right angles to the sides of the blades, each of said blades having one of-its sides arranged opposite one of the side faces of an associated channel and being in engagement with said right angularly disposed faces of an associated presser member, and means carried by and movable in said head for forcing under considerable pressure each of the blades in four different selected operating positions against the right angularly disposed faces of the associated L-shaped presser member with the teeth of the active operating portion of each of the blades projecting beyond the presser face of said member, the apices of the teeth of the active operating portions of the blades in each of said four different operating positions in the head having an angle of back rake complemental to the angle at which the general planes of the-channels are obliquely inclined to the plane disposed at right angles to the axis of rotation of the tool.

8. In a roughing machine, a support for a work piece, an end mill roughing tool rotatable about an axis and having an end face, and means for feeding and guiding the work piece mounted upon the support past the tool, said tool comprising circumferentially spaced blades a general plane-ofeaoh of which is obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool, each of said blades having teeth end tips of apices of which project beyond said end face and are arranged substantially in a frusto-conical surface which faces away from said axis at an oblique angle thereto, said axis of rotation of the tool lying outside of and being tilted toward a portion of the Work piece being operated upon by the tool.

9. In a roughing machine, a ring support rotatable about an axis, and an end mill roughing tool which has an end face and is rotatable about an axis inclined at a slight angle to the axis of rotation of the support, said tool being arranged opposite said support and comprising a plurality of blades a general plane of each of which is obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool and is longitudinally skewed with relation to a plane extending through the blade and including the axis of rotation of the tool, each of said blades having teeth projecting beyond said end face and extending generally circumferentially about said axis.

10. In a roughing machine, an end mill roughing tool rotatable about an axis and having teeth which are arranged substantially in a frusto-conical surface, a work support comprising inner and outer concentric rings which are spaced from and are arranged opposite the teeth of the tool and which are rotatable about and are independently yieldable away from the tool lengthwise of an axis which substantially intersects and is inclined at a slight angle to the axis of rotation of the tool, means for rotating the tool and the rings in opposite directions, and means for guiding work over the rings and past the tool to prepare a surface of the work for the reception of adhesive, and means for limiting yielding movement of the outer ring relatively to the inner ring away from the tool.

11. In a roughing machine, a roughing tool rotatable about an axis, said tool having teeth end tips of apices of which, when the tool is rotated, move substantially in a frusto-conical surface which faces away from the axis at an oblique angle thereto, a support positioned opposite said frusto-conical surface, and means, which comprises a gage having a face, for guiding an outsole mounted upon the support past the tool, said face of the gage being positioned between the axis of rotation of the tool and the portion of the support engaged by the outsole, said tool being initially adjustable with relation to the support generally lengthwise of an element of the frusto-conical surface which is arranged nearest to and opposite the support.

12. In an outsole roughing machine, a roughing tool rotatable about an axis and comprising circumferentially spaced blades, concentric work supporting sleeves which are rotatable about an axis inclined at a slight angle to and substantially intersecting the axis of rotation of the tool and which are independently yieldable lengthwise of said axis, and means comprising said sleeves for feeding and guiding work past the roughing tool, an inner portion of each of said sleeves being flat and having lateral straight edges one of which during rotation of the tool lies in one portion of a substantially fmsto-conical surface and outer portions of each of said blades having teeth end tips of apices of which during rotation of the tool lie in another portion of said frusto-conical surface, said work feeding and guiding means comprising a cylindrical edge gage which is concentric and rotatable with the sleeves and has a peripheral face across and beyond which said one portion of the substantially frustoconical surface projects, said roughing tool being initially movable into different adjusted positions at right angles to the axis of rotation of the sleeves.

13. In an outsole roughing machine, a tool rotatable about an axis and comprising circumferentially spaced blades each having a flat inner portion which is provided with straight lateral edges, and an outer portion having teeth apices of which lie substantially in a plane of said fiat portion, one of said edges of the flat portion of each of the blades being arranged in one portion of a substantially frusto-conical surface which is centered about said axis and elements of which are inclined at a slight angle to said axis, and end tips of apices of the teeth of said outer portion of each of the blades being arranged in an adjacent portion of said frust-o-conical surface, a multipart support for an outsole, gages having arcuate faces respectively which are engaged by an edge of the outsole upon the support and across and beyond one of which extends said one portion of the substantially frusto-conical surface, and means for feeding the outsole guided by said gages over the support and past the tool to form along the margin of one face of said outsole a roughened band which is spaced from the edge of the outsole by a smooth band, said axis of rotation of the tool lying outside of the outsole being roughened and being tilted toward the outsole at an acute angle to the general plane of said face of the outsole being roughened, said tool being movable into different operating positions with relation to the support and the gages whereby to cause said one portion of the substantially frusto-conical surface to project different distances beyond the arcuate face of said one gage and accordingly to vary the position of the roughened band and the width of said smooth band formed on the outsole.

14. In an outsole roughing machine, a rotary cutter comprising a plurality of blades each having straight inner portions and toothed outer portions, and means which comprises a support arranged opposite the cutter and which is adapted to feed and guide an outsole between said support and said cutter to cause said toothed outer portion of said blades to form a uniformly wide roughened band on an inner portion of an outsole and to cause the straight inner portions of said blades to form on said inner side of the outsole between the roughened band and the edge of the outsole a smooth band of uniform width, said cutter being movable into different operating positions with relation to said means to vary the position of said roughened band upon the outsole and to vary the width of said smooth band.

15. In an outsole roughing machine, an end mill roughing tool rotatable in one direction about an axis and comprising a head having an end face, a plurality of circumferentially spaced channels which are formed in said end face of the head and each of which has parallel sides obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool, roughing blades having fiat parallel side faces and having opposite operating portions provided with teeth having respectively straight apices which extend from one side face of the blade to the other and are, arranged in parallel planes disposed at right angles to the sides of the blades, and means for securing in each of the channels one of the blades in four dififerent operating positions in which four different sets of end tips of the apices of the teeth project respectively in leading positions the same distance beyond the end face of the tool and in which the apices have a constant back rakev 16. In an outsole roughing machine, an end mill roughing, tool rotatable about an axis and comprising a head having an end face; a plurality of circumferentially spaced channels which are formed in and extend generally transversely of said end face and each or which has parallel sides and a bottom disposed at right angles to said sides and a general plane of which is obliquely inclined to a plane disposed at right angles to the axis of rotation of the tool, roughing blades having parallel side faces and opposite operating portions provided with teeth having respectively apices which extend substantially from one side face of the blade to the other and are arranged substantially in parallel planes disposed at right angles to the side faces of the blades, a filler piece having right angularly disposed faces shaped and arranged to fit engagingly one ofthe side faces and a bottom of one of said channels and having right angularly disposed faces adapted to be engaged by one o fthe sides and the apices of one operating portion of one of the cutting blades, and means for securing the tiller: pieces to the head with their first-named right angnlarly disposed faces in engagement with the sides of the bottoms respectively of the channels and for securing in four different operating positions the blades to the filler pieces and to the head with one ofthe sides and the apices of one of the operating portions of the filler pieces in engagement with the second-named right angularly disposed faces of the filler piece and with the tips of the apices of the teeth of the opposite operating portions of the blades projecting a constant distance beyond the end face and with the apices of the projecting teeth provided with a constant back rake. Y

2,590,136 Stacey Mar. 25, 1952. 

